CNMG 120412 AH6225 Wendeplatten - Tungaloy

Reliable PVD-coated AH6225 grade, precise CNMG 120412 geometry and a 1.2 mm nose radius combine to deliver stable cutting-edge life and consistent performance in stainless-steel turning. Order this insert directly via Metav Werkzeuge or consult our specialists for tailored application advice and tooling recommendations.

CNMG120412 AH6225 Tungaloy indexable insert – PVD-coated carbide, 80° rhombic

CNMG120412 AH6225 is an ISO-compliant indexable turning insert engineered for medium-duty stainless-steel turning and reliable chip control

• CNMG 120412 geometry, 80° rhombic
• PVD-coated carbide AH6225 grade
• Double-sided chipbreaker, through-hole
• Suitable for stainless steels and medium-duty turning

High-performance grade for demanding stainless-steel work

The AH6225 grade combines a precise PVD coating with a carbide substrate to provide a stable cutting edge at moderate cutting parameters. Designed specifically for machining stainless steels, the grade reduces the tendency for built-up edge and supports consistent surface finish across variable batch conditions. As a result, cycle times are more predictable and insert changes become less frequent, contributing to measurable productivity gains in serial turning operations.

Geometry tailored for rigidity and repeatability

The rhombic CNMG form with an 80° geometry and a 1.2 mm nose radius delivers a dependable compromise between strength and detail. The 4.76 mm plate thickness and the through-hole (cylindrical) ensure secure clamping and repeatable positioning in ISO-compatible holders. These geometry choices improve resistance to flank wear and help maintain dimensional accuracy on both internal and external bores. The result is reduced rework and a steadier process window for production runs.

Built for uptime and efficient material removal

A double-sided chipbreaker combined with the reindexable insert format increases effective tool life and lowers per-part tooling cost. The PVD-coated surface improves thermal resistance and wear behaviour, while the insert’s design supports stable swarf formation for reliable evacuation. For turning operations where consistent performance and low tooling overhead are priorities, this configuration provides a pragmatic balance of removal rate, finish quality and service intervals.

System compatibility and practical handling benefits

Supplied as an ISO-standard turning insert, the component integrates into a system consisting of the insert, a suitable external holder or boring bar, a support/clamping set and replacement screws. The rhombic shape, central hole and defined tolerance classes simplify inventory management and permit quick index changes on the shop floor. For more complex setups or unconventional workpiece materials, technical guidance is available to confirm holder selection and cutting data before committing to production.

For application support, tool selection or to obtain the correct CNMG120412 AH6225 Tungaloy insert for a specific turning task, contact Metav Werkzeuge by email at info@metav-werkzeuge.com or by phone on +49 2822 7131930 for expert advice and prompt assistance.

Technical data

• Article number: 6946689
• Manufacturer SKU: TUN6946689
• Item SKU: 6946689-Tungaloy
• Model series: ISO turning indexable inserts
• Manufacturer: Tungaloy

Core specifications

• Insert designation: CNMG120412
• Size: 12 mm
• Thickness: 4.76 mm
• Nose radius: 1.2 mm
• Relief angle: 0°
• Corner angle: 80°
• Hole style: cylindrical through-hole

Features / Applications

• Shape: rhombic
• Grade: AH6225
• Coating: PVD
• Material: carbide
• Chipbreaker: double-sided
• Typical use: turning (external and internal)
• Compatibility: ISO holders and boring bars

FAQ

What materials is this insert suitable for? The CNMG120412 AH6225 is optimised for machining stainless steels; the AH6225 grade and PVD coating help control built-up edge and provide reliable performance on a wide range of austenitic and ferritic stainless materials.

Can the insert be reindexed to extend service life? Yes, the rhombic CNMG geometry is double-sided and reindexable, allowing the insert to be rotated to fresh cutting edges, which effectively extends the useful life of each insert.

Which holder type is required for secure clamping? ISO-compatible external holders or boring bars that accept CNMG inserts with a central cylindrical through-hole are suitable; clamping must match the insert form, relief angle and tolerance class for optimal results.

What are the key dimensions to check before ordering? Confirm the insert designation CNMG120412, size 12 mm, thickness 4.76 mm, and nose radius 1.2 mm when selecting a replacement to ensure compatibility with existing tooling.

Manufacturer/Responsible: Tungaloy-NTK Germany GmbH, Katzbergstraße 3a, 40764 Langenfeld - Protected trademarks and product names are the property of their respective owners. Brand names and protected trademarks are mentioned solely for explanatory purposes. There is no affiliation between our company and the mentioned brands. The item offered is an original, brand-new product from the manufacturer.